Finding the Fourth Proportional to 31,389.33, 47,083.89 and 19,710.75

Step by Step Solution

1. Step 1: Write the proportion equation
   31,389.33 : 47,083.89 = 19,710.75 : x
2. Step 2: Convert to fraction form
   31,389.33/47,083.89 = 19,710.75/x
3. Step 3: Cross multiply
   31,389.33x = 47,083.89 × 19,710.75
4. Step 4: Simplify right side
   31,389.33x = 928,058,784.82
5. Step 5: Solve for x
   x = 928,058,784.82/31,389.33
6. Step 6: Final answer
   x = 29,566.06